Please keep clear that I'm NOT saying that there is anything wrong with ET, in fact it is great. But I want to read more opinions and strategies. Two heads think better than one. PLEASE don't start bashing ET in this post.
here are just a few quant related: nuclear phynance wilmott futures: trading blox personal investing: bogleheads blogs: world beta seekingalpha big picture kirk report abnormal returns message board: motleyfool
www.taoofthetrade.com He posts calls premarket and intraday and has good commentary. Fairly new blog, but worthwile to have as one of your feeds.
Not sure about using motley fool's message boards, but the articles are complete garbage designed to trick people into clicking their links.